Blockchain technology has been rated by many people as a fundamental building block for future corporate transactions, as the need for trust, security and transparency will continue to dominate in business applications. The blockchain technology provides an anti hacking model of consensus, uses a decentralized network to check and encrypt transactions.
In this case, Blockchain, which allows to validate information and its continuity, imposes insurmountable limitations in the case of personal data of users. These are the risks of gaining access to personal information, the inability to realize the “right to oblivion” and a number of others. Reliability of personal information should be even higher than the reliability of storage facilities.
Our approach to storing critical data is based on using such features of the blockchain. The user data is stored in the internal SQL-cluster, and the attachment files are stored in the file storage, respectively. For each critical record, a checksum is calculated (for example, SHA512 hash) and a timestamp that will be stored in one or more open network networks. When retrieving data from our database, the checksum is recalculated and compared with the received hash from the block. At the moment, we are testing the possibilities of several block-network networks so that the problem of high commissions does not hinder the development of business.
At the scale of network expantion, the solution will be based on the combination or choice of the most optimal storage option, which may be based on private locker platforms, such as Hyperledger Fabric, Exonum, with periodic recording of the network snapshot into a public blockcahin - this will help balance the problem of high commissions by complicating mechanism of data validation. One of the promising solutions can also be a completely new scalable cloud blockchain database FlureeDB, which builds each transaction in a time block, creating a central blockchain of customers. If the test results show the possibility of its application, FlureeDB technology can be the central link of the system.
In turn, the Utility-token E-talon is the classic ERC223 Ethereum token. Pros of use at the moment outweigh the relatively expensive transactions. Token is an internal currency, a discount instrument and a universal loyalty point for platform partners. Tokens are used for internal settlements, which makes them significantly more profitable due to the system of discounts and loyalty programs, as well as protected thanks to the mechanism of smart contracts.
